SET SESSION STORAGE_ENGINE = InnoDB;
drop table if exists t1,t3,t4,t5;
create table t1 (a int, b char(10), key a  (a), key b  (a,b));
insert into t1 values
(17,"ddd"),(18,"eee"),(19,"fff"),(19,"yyy"),
(14,"aaa"),(16,"ccc"),(16,"xxx"),
(20,"ggg"),(21,"hhh"),(22,"iii");
handler t1 open as t2;
handler t2 read b first;
a	b
14	aaa
handler t2 read b next;
a	b
16	ccc
handler t2 read b next;
a	b
16	xxx
handler t2 read b prev;
a	b
16	ccc
handler t2 read b last;
a	b
22	iii
handler t2 read b prev;
a	b
21	hhh
handler t2 read b prev;
a	b
20	ggg
handler t2 read b first;
a	b
14	aaa
handler t2 read b prev;
a	b
handler t2 read b last;
a	b
22	iii
handler t2 read b prev;
a	b
21	hhh
handler t2 read b next;
a	b
22	iii
handler t2 read b next;
a	b
handler t2 read a=(15);
a	b
handler t2 read a=(21);
a	b
21	hhh
handler t2 read a=(19,"fff");
ERROR 42000: Too many key parts specified; max 1 parts allowed
handler t2 read b=(19,"fff");
a	b
19	fff
handler t2 read b=(19,"yyy");
a	b
19	yyy
handler t2 read b=(19);
a	b
19	fff
handler t1 read a last;
ERROR 42S02: Unknown table 't1' in HANDLER
handler t2 read a=(11);
a	b
handler t2 read a>=(11);
a	b
14	aaa
handler t2 read b=(18);
a	b
18	eee
handler t2 read b>=(18);
a	b
18	eee
handler t2 read b>(18);
a	b
19	fff
handler t2 read b<=(18);
a	b
18	eee
handler t2 read b<(18);
a	b
17	ddd
handler t2 read a=(15);
a	b
handler t2 read a>=(15) limit 2;
a	b
16	ccc
16	xxx
handler t2 read a>(15) limit 2;
a	b
16	ccc
16	xxx
handler t2 read a<=(15);
a	b
14	aaa
handler t2 read a<(15);
a	b
14	aaa
handler t2 read a=(54);
a	b
handler t2 read a>=(54);
a	b
handler t2 read a>(54);
a	b
handler t2 read a<=(54);
a	b
22	iii
handler t2 read a<(54);
a	b
22	iii
handler t2 read a=(1);
a	b
handler t2 read a>=(1);
a	b
14	aaa
handler t2 read a>(1);
a	b
14	aaa
handler t2 read a<=(1);
a	b
handler t2 read a<(1);
a	b
handler t2 read b first limit 5;
a	b
14	aaa
16	ccc
16	xxx
17	ddd
18	eee
handler t2 read b next  limit 3;
a	b
19	fff
19	yyy
20	ggg
handler t2 read b prev  limit 10;
a	b
19	yyy
19	fff
18	eee
17	ddd
16	xxx
16	ccc
14	aaa
handler t2 read b>=(16) limit 4;
a	b
16	ccc
16	xxx
17	ddd
18	eee
handler t2 read b>=(16) limit 2,2;
a	b
17	ddd
18	eee
select * from t1 where a>=16 order by a,b limit 2,2;
a	b
17	ddd
18	eee
handler t2 read a last  limit 3;
a	b
22	iii
21	hhh
20	ggg
handler t2 read b=(16) limit 1,3;
a	b
16	xxx
handler t2 read b=(19);
a	b
19	fff
handler t2 read b=(19) where b="yyy";
a	b
19	yyy
handler t2 read first;
a	b
17	ddd
handler t2 read next;
a	b
18	eee
handler t2 read next;
a	b
19	fff
handler t2 close;
handler t1 open;
handler t1 read b next;
a	b
14	aaa
handler t1 read b next;
a	b
16	ccc
handler t1 close;
handler t1 open;
handler t1 read a prev;
a	b
22	iii
handler t1 read a prev;
a	b
21	hhh
handler t1 close;
handler t1 open as t2;
handler t2 read first;
a	b
17	ddd
alter table t1 engine = InnoDB;
handler t2 read first;
ERROR 42S02: Unknown table 't2' in HANDLER
handler t1 open;
handler t1 read a=(16) limit 1,3;
a	b
16	xxx
flush tables;
handler t1 read a=(16) limit 1,3;
a	b
16	xxx
handler t1 close;
handler t1 open;
prepare stmt from 'handler t1 read a=(?) limit ?,?';
set @a=16,@b=1,@c=100;
execute stmt using @a,@b,@c;
a	b
16	xxx
set @a=16,@b=2,@c=1;
execute stmt using @a,@b,@c;
a	b
set @a=16,@b=0,@c=2;
execute stmt using @a,@b,@c;
a	b
16	ccc
16	xxx
deallocate prepare stmt;
prepare stmt from 'handler t1 read a next limit ?';
handler t1 read a>=(11);
a	b
14	aaa
set @a=3;
execute stmt using @a;
a	b
16	ccc
16	xxx
17	ddd
execute stmt using @a;
a	b
18	eee
19	fff
19	yyy
execute stmt using @a;
a	b
20	ggg
21	hhh
22	iii
deallocate prepare stmt;
prepare stmt from 'handler t1 read b prev limit ?';
execute stmt using @a;
a	b
22	iii
21	hhh
20	ggg
execute stmt using @a;
a	b
19	yyy
19	fff
18	eee
execute stmt using @a;
a	b
17	ddd
16	xxx
16	ccc
execute stmt using @a;
a	b
14	aaa
deallocate prepare stmt;
prepare stmt from 'handler t1 read b=(?,?)';
set @a=14, @b='aaa';
execute stmt using @a,@b;
a	b
14	aaa
set @a=14, @b='not found';
execute stmt using @a,@b;
a	b
deallocate prepare stmt;
prepare stmt from 'handler t1 read b=(1+?) limit 10';
set @a=15;
execute stmt using @a;
a	b
16	ccc
16	xxx
execute stmt using @a;
a	b
16	ccc
16	xxx
deallocate prepare stmt;
prepare stmt from 'handler t1 read a>=(?) where a < ? limit 5';
set @a=15, @b=20;
execute stmt using @a,@b;
a	b
16	ccc
16	xxx
17	ddd
18	eee
19	fff
execute stmt using @a,@b;
a	b
16	ccc
16	xxx
17	ddd
18	eee
19	fff
deallocate prepare stmt;
prepare stmt from 'handler t1 read a=(?)';
set @a=16;
execute stmt using @a;
a	b
16	ccc
alter table t1 add c int;
execute stmt using @a;
ERROR 42S02: Unknown table 't1' in HANDLER
deallocate prepare stmt;
handler t1 close;
ERROR 42S02: Unknown table 't1' in HANDLER
handler t1 open;
prepare stmt from 'handler t1 read a=(?)';
flush tables;
set @a=16;
execute stmt using @a;
ERROR HY000: Prepared statement needs to be re-prepared
deallocate prepare stmt;
handler t1 close;
handler t1 open as t2;
drop table t1;
create table t1 (a int not null);
insert into t1 values (17);
handler t2 read first;
ERROR 42S02: Unknown table 't2' in HANDLER
handler t1 open as t2;
alter table t1 engine=CSV;
handler t2 read first;
ERROR 42S02: Unknown table 't2' in HANDLER
drop table t1;
create table t1 (a int);
insert into t1 values (1),(2),(3),(4),(5),(6);
delete from t1 limit 2;
handler t1 open;
handler t1 read first;
a
3
handler t1 read first limit 1,1;
a
4
handler t1 read first limit 2,2;
a
5
6
delete from t1 limit 3;
handler t1 read first;
a
6
drop table t1;
create table t1(a int, index  (a));
insert into t1 values (1), (2), (3);
handler t1 open;
handler t1 read a=(W);
ERROR 42S22: Unknown column 'W' in 'field list'
handler t1 read a=(a);
ERROR HY000: Incorrect arguments to HANDLER ... READ
drop table t1;
create table t1 (a char(5));
insert into t1 values ("Ok");
handler t1 open as t;
handler t read first;
a
Ok
use mysql;
handler t read first;
a
Ok
handler t close;
handler test.t1 open as t;
handler t read first;
a
Ok
handler t close;
use test;
drop table t1;
create table t1 ( a int, b int, INDEX a  (a) );
insert into t1 values (1,2), (2,1);
handler t1 open;
handler t1 read a=(1) where b=2;
a	b
1	2
handler t1 read a=(1) where b=3;
a	b
handler t1 read a=(1) where b=1;
a	b
handler t1 close;
drop table t1;
create table t1 (c1 char(20));
insert into t1 values ("t1");
handler t1 open as h1;
handler h1 read first limit 9;
c1
t1
create table t2 (c1 char(20));
insert into t2 values ("t2");
handler t2 open as h2;
handler h2 read first limit 9;
c1
t2
create table t3 (c1 char(20));
insert into t3 values ("t3");
handler t3 open as h3;
handler h3 read first limit 9;
c1
t3
create table t4 (c1 char(20));
insert into t4 values ("t4");
handler t4 open as h4;
handler h4 read first limit 9;
c1
t4
create table t5 (c1 char(20));
insert into t5 values ("t5");
handler t5 open as h5;
handler h5 read first limit 9;
c1
t5
alter table t1 engine=MyISAM;
handler h1 read first limit 9;
ERROR 42S02: Unknown table 'h1' in HANDLER
handler h2 read first limit 9;
c1
t2
handler h3 read first limit 9;
c1
t3
handler h4 read first limit 9;
c1
t4
handler h5 read first limit 9;
c1
t5
alter table t5 engine=MyISAM;
handler h1 read first limit 9;
ERROR 42S02: Unknown table 'h1' in HANDLER
handler h2 read first limit 9;
c1
t2
handler h3 read first limit 9;
c1
t3
handler h4 read first limit 9;
c1
t4
handler h5 read first limit 9;
ERROR 42S02: Unknown table 'h5' in HANDLER
alter table t3 engine=MyISAM;
handler h1 read first limit 9;
ERROR 42S02: Unknown table 'h1' in HANDLER
handler h2 read first limit 9;
c1
t2
handler h3 read first limit 9;
ERROR 42S02: Unknown table 'h3' in HANDLER
handler h4 read first limit 9;
c1
t4
handler h5 read first limit 9;
ERROR 42S02: Unknown table 'h5' in HANDLER
handler h2 close;
handler h4 close;
handler t1 open as h1_1;
handler t1 open as h1_2;
handler t1 open as h1_3;
handler h1_1 read first limit 9;
c1
t1
handler h1_2 read first limit 9;
c1
t1
handler h1_3 read first limit 9;
c1
t1
alter table t1 engine=InnoDB;
handler h1_1 read first limit 9;
ERROR 42S02: Unknown table 'h1_1' in HANDLER
handler h1_2 read first limit 9;
ERROR 42S02: Unknown table 'h1_2' in HANDLER
handler h1_3 read first limit 9;
ERROR 42S02: Unknown table 'h1_3' in HANDLER
drop table t1;
drop table t2;
drop table t3;
drop table t4;
drop table t5;
create table t1 (c1 int);
insert into t1 values (1);
handler t1 open;
handler t1 read first;
c1
1
send the below to another connection, do not wait for the result
optimize table t1;
proceed with the normal connection
handler t1 read next;
c1
1
handler t1 close;
read the result from the other connection
Table	Op	Msg_type	Msg_text
test.t1	optimize	note	Table does not support optimize, doing recreate + analyze instead
test.t1	optimize	status	OK
proceed with the normal connection
drop table t1;
CREATE TABLE t1 (  no1 smallint(5) NOT NULL default '0',  no2 int(10) NOT NULL default '0',  PRIMARY KEY  (no1,no2));
INSERT INTO t1 VALUES (1,274),(1,275),(2,6),(2,8),(4,1),(4,2);
HANDLER t1 OPEN;
HANDLER t1 READ `primary` = (1, 1000);
no1	no2
HANDLER t1 READ `primary` PREV;
no1	no2
1	275
HANDLER t1 READ `primary` = (1, 1000);
no1	no2
HANDLER t1 READ `primary` NEXT;
no1	no2
2	8
DROP TABLE t1;
create table t1 (c1 int);
insert into t1 values (14397);
flush tables with read lock;
drop table t1;
ERROR HY000: Can't execute the query because you have a conflicting read lock
send the below to another connection, do not wait for the result
drop table t1;
proceed with the normal connection
select * from t1;
c1
14397
unlock tables;
read the result from the other connection
proceed with the normal connection
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
drop table if exists t1;
Warnings:
Note	1051	Unknown table 't1'
create table t1 (a int not null) ENGINE=CSV;
--> client 2
handler t1 open;
ERROR HY000: Table storage engine for 't1' doesn't have this option
--> client 1
drop table t1;
create table t1 (a int);
handler t1 open as t1_alias;
handler t1_alias read a next;
ERROR 42000: Key 'a' doesn't exist in table 't1_alias'
handler t1_alias READ a next where inexistent > 0;
ERROR 42S22: Unknown column 'inexistent' in 'field list'
handler t1_alias read a next;
ERROR 42000: Key 'a' doesn't exist in table 't1_alias'
handler t1_alias READ a next where inexistent > 0;
ERROR 42S22: Unknown column 'inexistent' in 'field list'
handler t1_alias close;
drop table t1;
create temporary table t1 (a int, b char(1), key a  (a), key b  (a,b));
insert into t1 values (0,"a"),(1,"b"),(2,"c"),(3,"d"),(4,"e"),
(5,"f"),(6,"g"),(7,"h"),(8,"i"),(9,"j"),(9,'k');
select a,b from t1;
a	b
0	a
1	b
2	c
3	d
4	e
5	f
6	g
7	h
8	i
9	j
9	k
handler t1 open as a1;
handler a1 read a=(1);
a	b
1	b
handler a1 read a next;
a	b
2	c
handler a1 read a next;
a	b
3	d
select a,b from t1;
ERROR HY000: Can't reopen table: 'a1'
handler a1 read a prev;
a	b
2	c
handler a1 read a prev;
a	b
1	b
handler a1 read a=(6) where b="g";
a	b
6	g
handler a1 close;
select a,b from t1;
a	b
0	a
1	b
2	c
3	d
4	e
5	f
6	g
7	h
8	i
9	j
9	k
handler t1 open as a2;
handler a2 read b=(9);
a	b
9	j
handler a2 read b next;
a	b
9	k
handler a2 read b prev limit 2;
a	b
9	j
8	i
handler a2 read b last;
a	b
9	k
handler a2 read b prev;
a	b
9	j
handler a2 close;
drop table t1;
create table t1 (a int);
create temporary table t2 (a int, key  (a));
handler t1 open as a1;
handler t2 open as a2;
handler a2 read a first;
a
drop table t1, t2;
handler a2 read a next;
ERROR 42S02: Unknown table 'a2' in HANDLER
handler a1 close;
ERROR 42S02: Unknown table 'a1' in HANDLER
create table t1 (a int, key  (a));
create table t2 like t1;
handler t1 open as a1;
handler t2 open as a2;
handler a1 read a first;
a
handler a2 read a first;
a
alter table t1 add b int;
handler a1 close;
ERROR 42S02: Unknown table 'a1' in HANDLER
handler a2 close;
drop table t1, t2;
create table t1 (a int, key  (a));
handler t1 open as a1;
handler a1 read a first;
a
rename table t1 to t2;
handler a1 read a first;
ERROR 42S02: Unknown table 'a1' in HANDLER
drop table t2;
create table t1 (a int, key  (a));
create table t2 like t1;
handler t1 open as a1;
handler t2 open as a2;
handler a1 read a first;
a
handler a2 read a first;
a
optimize table t1;
Table	Op	Msg_type	Msg_text
test.t1	optimize	note	Table does not support optimize, doing recreate + analyze instead
test.t1	optimize	status	OK
handler a1 close;
ERROR 42S02: Unknown table 'a1' in HANDLER
handler a2 close;
drop table t1, t2;
#
# BUG#51877 - HANDLER interface causes invalid memory read
#
CREATE TABLE t1(a INT, KEY  (a));
HANDLER t1 OPEN;
HANDLER t1 READ a FIRST;
a
INSERT INTO t1 VALUES(1);
HANDLER t1 READ a NEXT;
a
HANDLER t1 CLOSE;
DROP TABLE t1;
CREATE TABLE t1 (f1 integer, f2 integer, primary key (f1), key (f2)) engine=innodb;
INSERT INTO t1 VALUES (1,1),(2,2),(3,3);
HANDLER t1 OPEN;
HANDLER t1 READ FIRST WHERE f2 <= 1;
f1	f2
1	1
HANDLER t1 READ `PRIMARY` PREV;
f1	f2
3	3
DROP TABLE t1;